Impedance levels vary (34 Ohms vs 32 ohm), which can affect compatibility and audio output when used with different devices. Koss UR22i and Philips SHL3175BK/00 are premium wireless headphones designed to deliver high-quality sound along with advanced features like noise cancellation and long battery life. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Koss UR22i and Philips SHL3175BK/00 offer different noise cancellation capabilities (NA vs Passive), which can impact how effectively they block external noise. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. The frequency response differs (20 Hz - 20000 Hz vs 8 Hz - 23500 kHz), which can influence how well the headphones reproduce lows, mids, and highs. There is a noticeable difference in weight (NA vs 190 gm), which may affect comfort during extended use. The driver size differs between the two (NA vs 40 mm), which can influence sound depth, bass response, and overall audio clarity. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios.

Verdict: Both headphones offer strong performance, and the right choice depends on your priorities such as battery life, comfort, and noise cancellation.